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CVE-2008-4409

25
FAUCET Score

CVE-2008-4409 describes a denial-of-service vulnerability in libxml2 versions 2.7.0 and 2.7.1. This flaw arises from improper handling of "predefined entity definitions" within XML entities, allowing an attacker to trigger excessive memory consumption and application crashes, as demonstrated by the xmllint tool. The vulnerability has a CVSS score of 5.0, indicating a medium severity. It can be exploited remotely with low attack complexity, requiring no authentication, and primarily impacts availability (A:P). While not listed on the KEV catalog or Hot List, exploit code for this vulnerability is available on ExploitDB (EDB-32454). There is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.7.0CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:2.7.0:*:*:*:*:*:*:*
2.7.1CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:2.7.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
8.53%
Probability of exploitation in next 30 days
EPSS Percentile
94.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-32454 · Oct 2, 2008
This CVE's current EPSS score of 0.0853 is in the 93rd percentile among its peer group of 23,705 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2008-4409Moderate

libxml2: infinite loop when entity is used in entity definition

Oct 2, 2008

References

bugzilla.gnome.org / show_bug.cgi
Exploit
lists.apple.com / archives/security-announce/2009/jun/msg00002.html
lists.apple.com / archives/security-announce/2009/Jun/msg00005.html
openwall.com / lists/oss-security/2008/10/02/4
secunia.com / advisories/32130
secunia.com / advisories/32175
secunia.com / advisories/32974
secunia.com / advisories/35379
security.gentoo.org / glsa/glsa-200812-06.xml
exchange.xforce.ibmcloud.com / vulnerabilities/45633
support.apple.com / kb/HT3613
support.apple.com / kb/HT3639
redhat.com / archives/fedora-package-announce/2008-October/msg00125.html
redhat.com / archives/fedora-package-announce/2008-October/msg00130.html
mandriva.com / security/advisories
securityfocus.com / bid/31555
vupen.com / english/advisories/2009/1522
vupen.com / english/advisories/2009/1621